Add rake tasks for automation

rake build       # Builds the site, which can be found in _deploy
rake clean       # Cleans the "built", (removes the _deploy folder)
rake default     # Cleans and builds the site
rake deploy      # Deploys the site via FTP
rake production  # Sets the credentials for production (FTP deploy)
rake serve       # Runs jekyll server
rake show        # Opens the site in browser (_deploy/index.html)
Add TODO for better implementation of FTP deployment
Merge pull request #4 from xarisd/deploy

Simple Deployment rake task with FTP